How to: Create an ASP.NET Login Page

To create a login page

1. Create an ASP.NET Web application that uses ASP.NET membership. For details and examples, see Configuring an ASP.NET Application to Use Membership.
2. Create an ASP.NET Web page in your application named Login.aspx
3. Add a Login control to the page.

First Create WebForm

<form id="form1" runat="server"><asp:Login ID = "Login1" runat = "server" OnAuthenticate= "ValidateUser"></asp:Login></form>

OnButton click event Copy and past this code

using System.Data;

using System.Configuration;

using System.Data.SqlClient;

using System.Web.Security;

protected void ValidateUser(object sender, EventArgs e)

{

    int userId = 0;

    string constr = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;

    using (SqlConnection con = new SqlConnection(constr))

    {

        using (SqlCommand cmd = new SqlCommand("Validate_User"))

        {

            cmd.CommandType = CommandType.StoredProcedure;

            cmd.Parameters.AddWithValue("@Username", Login1.UserName);

            cmd.Parameters.AddWithValue("@Password", Login1.Password);

            cmd.Connection = con;

            con.Open();

            userId = Convert.ToInt32(cmd.ExecuteScalar());

            con.Close();

        }

        switch (userId)

        {

            case -1:

                Login1.FailureText = "Username and/or password is incorrect.";

                break;

            case -2:

                Login1.FailureText = "Account has not been activated.";

                break;

            default:

                FormsAuthentication.RedirectFromLoginPage(Login1.UserName, Login1.RememberMeSet);

                break;

        }

    }

}

So finaly your login form ready

Creating (Declaring) PHP Variables

Creating (Declaring) PHP Variables

In PHP, a variable starts with the $ sign, followed by the name of the variable:

example are below

<?php
$txt = "Hello world!";
$x = 5;
$y = 10.5;
?>

After the execution of the statements above, the variable $txt will hold the value Hello world!, the variable $x will hold the value 5, and the variable $y will hold the value 10.5.

Note: When you assign a text value to a variable, put quotes around the value.

Note: Unlike other programming languages, PHP has no command for declaring a variable. It is created the moment you first assign a value to it.

PHP 5 Introduction

PHP 5 Introduction 

 PHP scripts are executed on the server. What You Should Already Know Before you continue you should have a basic understanding of the following: HTML CSS JavaScript If you want to study these subjects first, find the tutorials on our Home page. What is PHP? PHP is an acronym for "PHP: Hypertext Preprocessor" PHP is a widely-used, open source scripting language PHP scripts are executed on the server PHP is free to download and use Note PHP is an amazing and popular language! It is powerful enough to be at the core of the biggest blogging system on the web (WordPress)! It is deep enough to run the largest social network (Facebook)! It is also easy enough to be a beginner's first server side language! What is a PHP File? PHP files can contain text, HTML, CSS, JavaScript, and PHP code PHP code are executed on the server, and the result is returned to the browser as plain HTML PHP files have extension ".php" What Can PHP Do? PHP can generate dynamic page content PHP can create, open, read, write, delete, and close files on the server PHP can collect form data PHP can send and receive cookies PHP can add, delete, modify data in your database PHP can be used to control user-access PHP can encrypt data With PHP you are not limited to output HTML. You can output images, PDF files, and even Flash movies. You can also output any text, such as XHTML and XML.